Channel switching volume drop
My tube amp has never given me any trouble before, but I noticed yesterday that when I switch channels, Channel 2 has almost no volume, even when I crank it. Channel 1 still makes my ears bleed, and even though I keep channel 3 clean, that works just fine too. I made the mistake of turning it on without a speaker hooked up and let it warm up on standby for about 15 minutes like that, but as soon as I realized I was getting no sound, I shut it right off. Any potential causes? Any help would be greatly appreciated...If it helps, it's a Mesa Triple Rectifier (which I love the tone I get with bass, oddly enough).